1910.] NATURAL SCIENCES OF PHILADELPHIA. 



ON THE ORTHOPTERA OF BERMUDA. 

 BY JAMES A. G. REHN. 



In the spring of 1909 the Academy received from Mr. Frank M. 

 Jones a collection of Bermudan Orthoptera which had been secured 

 by him during a residence of some months in the islands. This 

 sending was supplemented later by several others, the whole series, 

 while not large, being of considerable interest, as Mr. Jones endeavored 

 to secure every species seen during his stay, which lasted from Decem- 

 ber, 1908, to the latter part of April, 1909. The examination of the 

 literature on Bermudan Orthoptera demonstrated how imperfect 

 and unsatisfactory was the last summary of the Bermudan repre- 

 sentatives of the order, that of Verrill. In consequence the pub- 

 lished records were gathered together, the determinations of necessity 

 being given as recorded unless the synonymy was well known and 

 established, the results of the material on hand and the published 

 records being incorporated into the paper here presented. 



Twenty-eight species are here recorded, of which two taken from 

 previous authors have only generic reference. A tabulation of the 

 species according to their distribution (omitting the two without 

 specific identification) gives the following results: 



Peculiar to Bermuda 2 



Tropical and subtropical America 2 



South America, Antilles and Bermuda ] 



North America and Bermuda 5 



Circumtropical 3 



North America, West Indies and Bermuda 3 



Cosmopolitan 5 



All America 2 



North America, Bahamas and Bermuda 1 



North America, Mexico, Cuba, Bahamas and Bermuda 1 



North America, Mexico and Bermuda 1 



From this it would appear that the greater portion of the Qrthop- 

 terous fauna of the region is closer related to that of the mainland 

 than to that of the Antilles, excluding, of course, from consideration 

 the cosmopolitan and circumtropical forms, which probably have 

 been introduced bv commerce. 



